Cushion-tire structure



Feb. 13, 1923. f 'VL-44.52014. f'

1. R. GAMMETEJR. .CUSHION TIRE sTRu-CTURE.

FILED DEC. 12,1922.`

.Hg/MA,

Paiemedreb. 13, 1era.

l UNETED To all wzom/t ymay concern: I

a citizen of the United States, residing at Akron, vin the county of Summit and State 5 oi' Ohio, have invented a certain new and useful Cushion-Tire Structure, of which the following is a specification.

body vrecessed from its inner 'periphery and vulcanized to laterally separated metal rings constituting the tire-base, such tires commonly being mounted upon la permanent rim CUSHION-TIRE STRUCTURE.

Application led December 1,2, 1922. Serial NoJGIGSl,

OF NEW YORK, N. Y., CORPORATON OF NEW YORK. y

MMM@

res PME-N1"-4 @FF-WE JOHN R. AMMETER, OF AKRON, OHIO, ASSIGNOR T0 THE B. F. GOODR ICH COMPANY,

4 20, Spariiiing said slot; The grooves 19`a1e Be it known that I, J oHN R. GAMMETER, of such diameter and Width as to -leave up standing uncut portions orlugs 19, 19 adjoining the slot 12 at each side thereof, andthe Washers 20, by their engagement with these lugs and with the opposite walls of the grooves, effectually` prevent any relative latfr This invention relates to cushion tires, and eral or circumferential movement ot' the hase particularly cushion tires comprising a tire members 11.

The grooves 19 preferably are milled in the base ,10A-after the tire has been vulcanized and the cavity forming core removed from thel recess 18, the base rings, during such in pressed-ori relation. Tire-bases of this milling, being held in properrelation to character require means to prevent relativeA movement, both lateral and rotary, between the two members ot' the base while the tire 1S concentric.v The grooves preferably 'haveeachother in any suitable manner, thusy assurmg that the grooves. of each pair will be in use as well as in the mountincr of' the slightly .greater depth than the thickness of same upon the permanent rim. '1l-he chiet the washers, and the metal of the base, ringsl 2o obj ectsof this-,invention are to provide effecf tive and economical means for this purpose.

Of the"y accompanying drawings:

Fig. 1 is a side elevation of a tire, partially in section, embodying a ,preferred form of my invention. i

l. F ig. 2 is a sectional perspective View, sec-- tioned online 2-2 of Fig; 1.

generally an annuflar metal tire-base comprising two side members, or base rings 11, 11, laterally separated from each other by a circumferential slot 12. The side members 11, l1 are provided respectively with integral side'langes 13, 13 and are 'formed .35 on 4their outer peripheries with circumferential dove-tail grooves 14, 14 for anchoring t ereto the legs of a hollow cushion `'tirel 1'5,

-hard rubber compound '16, 16 interlocking '40 with the grooves 14 and a. body portion 17 of relatively soft rubber vulcanized to said foundation'layer. l.VVith-in the tire-bodyl is a .circumferential lcavity or recess 1 8 in continuation ofthe slot 12.

Spaced at intervals about the inner periphery of the tire base 1Q are pairs of arcuis peened over at severalplaces around each washer as shown at 2l, 21 `to hold said wash# ers rmly in place.v This feature of the invention is articular-ly desirable for tires of. the presse -on type, as it lproduces. no obstruction on the inner periphery of the tire-1- 'base to hinder the mountin d upon the ermanent rim or telloe bandof' a -Referring to the drawings, 10 represents vehicle w eel. The washers 20 may be of such number and strength as 'to withstandvery great pressure in the pressing ofuthe tire structure onto the felloe or permanent rim. While the finished tire is strong and i durable', the spacing rings 20 permit the tirebase rings toI conform individually to the contour ofthe permanent rim, and the intervening spaces between said 'spacing rings permit ventilation'oftheinternal cavity of said tire comprising foundation layers of the tire. when'.A the ermanent rim is so formed, or so irregu arly fits the tire-base rings, as topermit the passage of air.

The lspacing'members 20are shown as annular washers, and preferably are such, since this form affords-simplicity of des-ign and cheapness of manufacture, their seating slots beingy adapted to be easily and cheaply milled, but I do not whollylimit myself to ate grooves 19, 19, the grooves of each pair this particular` Shape of spacing member.

being concentric and their common center lying Within the slot v12. Seated in said 5o grooves and snugly .fitting theysame are annular metallic Washers, or bridge-members I claim 1. A cushion tire structure comprising a parrot laterallysepa-ratedbase members, a tire-body vulcanized to said base members 'of' the .latter and spanning their intervening space, and n tirefbody vulcanizedthere0n,'a-I1d a. series l a cu'cumterential series of' annular spacing 0i circular, annular bridge melnbersset into u members set into. the inner peripheries of ali-venute, concentric grooves formed i n the lf) the rings and bridging the space between the inner -peripheries ot' said ringsi v v i 5 latter. v In Witness whereof I have hereunto Set my .i

2. A-cushion tire structure comprising a hand this 9th (luv 0fv December, 1922. pai-r of laterally separated tirebase rings, JOHN B, (J`rAl\'Il\1E'l`ER.' 

